每次都是iis重启之后才可以
该页所需的会话状态已不可用。或者是会话已过期、客户端未发送有效的会话 Cookie,或是会话状态的历史记录太小。请尝试增加历史记录大小或延长会话到期期限。
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sever2003服务器+IIS c#,wap网站

我的主页代码:
<%@ Page language="c#" Codebehind="wapIndex.aspx.cs" Inherits="GY_WebCenter.wapIndex" AutoEventWireup="false" %>
<%@ Register TagPrefix="mobile" Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %>
<HEAD>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="C#">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/Mobile/Page">
</HEAD>
<body Xmlns:mobile="http://schemas.microsoft.com/Mobile/WebForm">
<mobile:Form id="Form1" runat="server" Alignment="Left">
<mobile:Label id="Label1" runat="server" Font-Italic="False" Font-Bold="False" Font-Size="Normal">请输入用户名和密码:</mobile:Label>
<mobile:TextBox id="TextBoxUser" runat="server" Size="20"></mobile:TextBox>
<mobile:TextBox id="TextBoxPwd" runat="server" Size="21" Password="True"></mobile:TextBox>
<mobile:Command id="CommandLogon" runat="server" Font-Size="Small">登陆</mobile:Command>
<mobile:Label id="LabelValidate" runat="server" Font-Bold="False" Font-Size="Small" ForeColor="Red"></mobile:Label>
</mobile:Form>
</body>
间断性的出现此图片所示问题,无法登陆,每次都重启很麻烦,跪谢